With second quarter numbers from 2013 in, Landrieu is up to $4.86 million, and Cassidy $3.2 million.

But another candidate came forward in May: Robert Maness, a retired air force colonel who works as a safety director for Entergy Services, Inc. While his fundraising numbers have not been officially released, McGaughy gleaned insight from Maness in a phone interview Tuesday:

"Maness said he started fundraising over a month ago and has averaged around $1,000 a day...'I think $40,000 in 40 days in grassroots donations is a good show,' said Maness. 'I think it shows we have grassroots support and our message is the right message.'"

Elections are still 16 months away, and each candidates' cash-in-hand is bound to change. In general, though, incumbents have advantages over challengers when it comes to name recognition and campaign financing.

With the fundraising numbers at hand, do you think the 2014 U.S. Senate race will ultimately come down to Landrieu versus Cassidy?

Will the race's democratic leanings (based on campaign earnings thus far) translate to triumph? Or does Republican challenger Cassidy have a viable shot at ousting the incumbent?